Combined hydrogenation method for producing catalytic raw material and high-quality diesel oil

A combined method and diesel technology, which can be used in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve problems such as technical and economic constraints, reduce equipment investment and operating costs, achieve high selectivity and high activity, and achieve high application efficiency. wide range of effects

Active Publication Date: 2012-02-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as an intermediate pretreatment process, the application of catalytic cracking raw material pretreatment is often restricted by technical and economical efficiency

Method used

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  • Combined hydrogenation method for producing catalytic raw material and high-quality diesel oil
  • Combined hydrogenation method for producing catalytic raw material and high-quality diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The wax oil raw material in Example 1 is a mixed oil of coking wax oil and heavy straight-run wax oil, and the diesel raw material is a kind of inferior catalytic diesel raw material. The properties of the raw material are shown in Table 1. The embodiment is carried out on a 3L fixed-bed medium-scale hydrogenation test device equipped with two reactors and a common hydrogen system. The commercial grade of the catalyst combination used in the wax oil hydrotreating reactor is RG-10A / RG-10B / RVS-420 / RN-32V, and the filling volume ratio is 7:8:25:60. The combined commercial grade is RG-1 / RS-1000 / RIC-2, and the filling volume ratio is 9:60:31. After the catalyst is vulcanized and stabilized, the raw material oil is processed. The reaction products obtained in the two reaction zones are separated in the same post-separation system, and the hydrogen-rich gas obtained is returned to the reaction zone. The obtained liquid products are fractionated to obtain naphtha and diesel oil...

Embodiment 2

[0037] The wax oil feedstock in Example 2 is a straight-run wax oil with relatively good properties, and the diesel feedstock is a mixed oil of catalytic diesel and straight-run diesel. The properties of the feedstock are shown in Table 3. The properties of the two raw materials are relatively good, and a lower reaction pressure and a higher volumetric space velocity can be set. The embodiment is carried out on a 3L fixed-bed medium-scale hydrogenation test device equipped with two reactors and a common hydrogen system. The catalyst combination used in the wax oil hydrotreating reactor is commercially designated as RG-10A / RG-10B / RVS-420 / RN-32V, and the filling volume ratio is 5:5:40:50. The catalyst combination is used in the hydrogenation reforming reactor The commercial grades are RG-1 / RS-1000 / RIC-2, and the filling volume ratio is 7:63:30 respectively. After the catalyst is vulcanized and stabilized, the raw material oil is processed. The reaction products obtained in the ...

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Abstract

The invention relates to a combined hydrogenation method for producing catalytic raw material and high-quality diesel oil. The method arranges two parallel feedstock hydrogenation reaction zones, a shared hydrogen system and a shared post-separation system, wherein, the feedstock of the first hydrogenation reaction zone is a wax oil raw material, the feedstock of the second hydrogenation reaction zone is diesel oil raw material, and the hydrogen partial pressure at the inlets of the two reaction zones is 5.0-11.0MPa. The method of the invention can realize the two reaction processes of wax oil hydrotreatment and diesel oil hydro-upgrading on one instrument, and arranges only one system of new hydrogen supplementation, circulating hydrogen desulphurization and circulating hydrogen compression. And the reaction products are subjected to separation in one gas-liquid separation and fractionation system so as to obtain the target products. The method provided in the invention can effectively reduce equipment investment and operation cost, and improve the economic benefits to the maximum in an oil refining process.

Description

technical field [0001] The invention relates to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a hydrogenation combined method for producing catalytic raw materials and high-quality diesel oil. Background technique [0002] Catalytic cracking is a heavy oil lightening technology commonly used in refineries at home and abroad. The use of catalytic cracking technology can convert various wax oil fractions to residual oil into light products such as liquefied gas, catalytic gasoline and catalytic diesel, which brings good economic benefits to refineries. With the trend of heavy crude oil and high sulfidation becoming more and more obvious, the properties of catalytic cracking feedstock are getting worse and worse. In order to cope with this trend, the hydrogenation pretreatment technology of catalytic cracking feedstock has been widely used. Pretreatment of various wax oil fractions as one of the main feeds for catalytic cracking can effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 蒋东红胡志海张毓莹任亮龙湘云赵新强
Owner CHINA PETROLEUM & CHEM CORP
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